function showAlert() {
 alert('Hello World - this is an alert message!');
}
function checkReg()
{
	
	var rname, remail, rcompany, rphone;

		rname   = document.register.name.value;
		remail   = document.register.email.value;
		rphone   = document.register.phone.value;
		rcompany = document.register.company.value;
		

	if(rname == '')
	{
		document.getElementById('txtNameFailed').style.display="block";
		document.getElementById('txtName').focus();
		return false;
	}
	else if(remail == '')
	{
		document.getElementById('txtEmailFailed').style.display="block";
		document.getElementById('txtEmail').focus();
		return false;
	}
	else if(!isEmail(remail))
	{
		document.getElementById('txtEmailFailed').style.display="block";
		document.getElementById('txtEmail').focus();
		return false;
	}
	else if(rphone == '' || rphone.length<10)
	{
		document.getElementById('txtPhoneFailed').style.display="block";
		document.getElementById('txtPhone').focus();
		return false;
		alert('failed');
	}
	else if(rcompany == '')
	{
		document.getElementById('txtCopmanyFailed').style.display="block";
		document.getElementById('txtCopmany').focus();
		return false;
	}
	else
	{
		rname.value    = trim(rname);
		remail.value   = trim(remail);
		rphone.value = trim(rphone);
		rcompany.value = trim(rcompany);
		document.forms[0].submit();
		return true;
	}
}

/*
Strip whitespace from the beginning and end of a string
Input : a string
*/
function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
}

/*
Check if a string is in valid email format. 
Returns true if valid, false otherwise.
*/
function isEmail(str)
{
	var regex = /^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
	return regex.test(str);
}